drivers: sensor: st: replace i2/3c_burst_write

i2/3c_burst_write comes with a warning where this combined write
synthesized by thsi API may not be supported by all I2/3C
devices. Replace with i2c_write instead with a buffer combining
the address and data.

The Kconfig STMEMSC_I2C_WRITE_BUFFER_SIZE was added to set the
size of the buffer pushed to the stack.

Signed-off-by: Ryan McClelland <[email protected]>

drivers/sensor/st/Kconfig

@@ -37,6 +37,7 @@ source "drivers/sensor/st/stm32_digi_temp/Kconfig"
 source "drivers/sensor/st/stm32_temp/Kconfig"
 source "drivers/sensor/st/stm32_vbat/Kconfig"
 source "drivers/sensor/st/stm32_vref/Kconfig"
+source "drivers/sensor/st/stmemsc/Kconfig"
 source "drivers/sensor/st/stts22h/Kconfig"
 source "drivers/sensor/st/stts751/Kconfig"
 source "drivers/sensor/st/vl53l0x/Kconfig"

drivers/sensor/st/stmemsc/Kconfig

@@ -0,0 +1,13 @@
+# ST MEMS sensor configuration options
+
+# Copyright (c) 2025 Meta Platforms
+# SPDX-License-Identifier: Apache-2.0
+
+config STMEMSC_I3C_I2C_WRITE_BUFFER_SIZE
+	int "ST memsc I2C write buffer size"
+	default 16
+	depends on I2C || I3C
+	depends on HAS_STMEMSC
+	help
+	  The size of the buffer pushed on the stack used to copy
+	  the data to be written along with the register address.

drivers/sensor/st/stmemsc/stmemsc_i2c.c

@@ -21,7 +21,14 @@ int stmemsc_i2c_read(const struct i2c_dt_spec *stmemsc,
 int stmemsc_i2c_write(const struct i2c_dt_spec *stmemsc,
 		      uint8_t reg_addr, uint8_t *value, uint8_t len)
 {
-	return i2c_burst_write_dt(stmemsc, reg_addr, value, len);
+	uint8_t buf[CONFIG_STMEMSC_I3C_I2C_WRITE_BUFFER_SIZE];
+
+	__ASSERT_NO_MSG(len <= sizeof(buf) - 1);
+
+	buf[0] = reg_addr;
+	memcpy(&buf[1], value, len);
+
+	return i2c_write_dt(stmemsc, buf, len + 1);
 }
 
 int stmemsc_i2c_read_incr(const struct i2c_dt_spec *stmemsc,
@@ -34,6 +41,12 @@ int stmemsc_i2c_read_incr(const struct i2c_dt_spec *stmemsc,
 int stmemsc_i2c_write_incr(const struct i2c_dt_spec *stmemsc,
 			   uint8_t reg_addr, uint8_t *value, uint8_t len)
 {
-	reg_addr |= STMEMSC_I2C_ADDR_AUTO_INCR;
-	return stmemsc_i2c_write(stmemsc, reg_addr, value, len);
+	uint8_t buf[17];
+
+	__ASSERT_NO_MSG(len <= sizeof(buf) - 1);
+
+	buf[0] = reg_addr | STMEMSC_I2C_ADDR_AUTO_INCR;
+	memcpy(&buf[1], value, len);
+
+	return i2c_write_dt(stmemsc, buf, len + 1);
 }

drivers/sensor/st/stmemsc/stmemsc_i3c.c

@@ -21,6 +21,12 @@ int stmemsc_i3c_write(void *stmemsc,
 		      uint8_t reg_addr, uint8_t *value, uint8_t len)
 {
 	struct i3c_device_desc *target = **(struct i3c_device_desc ***)stmemsc;
+	uint8_t buf[CONFIG_STMEMSC_I3C_I2C_WRITE_BUFFER_SIZE];
 
-	return i3c_burst_write(target, reg_addr, value, len);
+	__ASSERT_NO_MSG(len <= sizeof(buf) - 1);
+
+	buf[0] = reg_addr;
+	memcpy(&buf[1], value, len);
+
+	return i3c_write(target, buf, len + 1);
 }